% More information see ETData.m
function f = tfmt(t)
    % allocate memory for f
    n = numel(t);
    f = cell(1, n);

    t = rem(t, 1440);
    h = fix(t / 60);
    m = rem(t, 60);

    for i = 1 : n
        f{i} = sprintf('%02d:%02d', h(i), m(i));
    end
end
